Holder for glowers.



R. NEGKERMAN & O. FOELL.

HOLDER FOB. GLOWEBS. APPLICATION FILED snmns, 1910.

Patented July 15, 1913.

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w owz 0 W, THEIIQTTORNE Y N FAC T.

UNITED STATES PATENT OFFICE.

ROY NECKERMAN, OF PITTSBURGH, PENNSYLVANIA, AND OTTO FOELL, OF NEWARK,

NEW JERSEY, ASSIGNORS TO NERNST LAMP COMPANY, A CORPORATION OF PEN N-SYLVANIA.

HOLDER FOR GLOWEBS.

Specification of Letters Patent.

Patented Ju 1y 1 5, 1913.

7 Application filed September 3, 1910. Serial No. 580,319.

To all whom it may conccm:

Be it known that we, Roy NECKERMAN, a citizen of the United States, andO'r'ro FOELL, a subject of the Emperor of Germany, residing atPittsburgh, in the county of Allegheny and State of Pennsylvania, andNewark, in the county of Essex and State of New Jersey, respectively,have made a new and useful Invention in Holders for Glowers, of whichthe following is a specification.

This invention relates to electric lamps and more particularly to meansfor supporting or mounting the light-emitting elements thereof.

In various kinds of electric lamps and especially in second classconductor lamps, the light emitting elements (in second class conductorlamps called glowers) become more or less plastic when hot and tend toeither sag or stretch out of shape. It has been customary to mount theglowers between more or less fixed or rigid supports and in order toprevent the sagging it has been customary to subject the light emittingelements to a slight tension in order to prevent, as far as possible,the sagging. This operation, of course, is more or less delicate and ithas been diflicult, if not practically impossible, to mount theseelements under just the proper tension. If it were not enough theelement would sag and if the slightest amount too much the terminalwires secured to the element would pull loose from the element when it,became plastic. The sagging in case the glowers were placed adjacent toheaters as in certain second class conductor lamps, has been the causeof short circuits.

An object of this invention is to provide supporting means for electriclamp light emitting elements whereby the elements at all times aresubject to just the proper tension so that the sagging is prevented andthe terminals will not pull away from the element while the same is inplastic state. This and other objects, which will readily appear tothose skilled in this art, we attain by the means described and claimedin the specification and illustrated in the drawings accompanying thesame and throughout which like elements are denoted by like characters.

For thesake of illustration, but without a view to limitation, We haveshown in the drawings views of glowers for second class conductor lampsmounted in accordance with this invention.

Figure 1 is a side elevational view of a lamp base showing the glowersupports constructed in accordance with our invention. Fig. 2 is aperspective view of the same, and Fig. 3 is a detailed perspective. viewof one of the glower supporting devices.

To one end of the porcelain or other suitable nonconducting base 10 amore or less rigid metallic support 11 is secured and this support atits lower end is preferably made hook shaped and bifurcated as shown at12. To the opposite end of the base is a plate 13 having bearings 14 inwhich is a pin 15 carrying a plurality of gravity supports 16. Thesesupports are preferably in the form of elbow levers and are pivoted atthe clbow by having pin 15 project through openings 17 therein. ()ne armof the elbow lever 16 is preferably hook shaped and bifurcated as at 18,the other end being provided with a weight 19. The elbow levers arespaced apart by spacing disks 1!) on the pin 15 and by outstandingspacing pieces 20 on the plate 13. The glowers 21 have terminal wires 22and 23 provided at their extremities with enlarged portions 24 and 25which engage the bifurcated hook portions 12 and 18ot' the supports 11and 16 respectively. The weights 19 on the laterally projecting arms ofthe supports 16 are preferably just heavy enough to provide the propertension for the glowers 21 so that when the glowers are heated they willneither sag nor unduly stretch. The. free ends of the supports 11 may beconnected to a single plate or they may be separately connected to theterminals 26, the plate 13 being connected to a terminal 27 so that theglower supports will be in circuit with the terminals 26, 27 and withthe glowers.

In accordance with the provisions of the patent statutes, we havedescribed the prin ciple of operation of our invention, together withthe device which we now consider to represent the best embodimentthereof, but We desire to have it understood that the device shown isonly illustrative and that the invention can be carried out by othermeans.

What we claim is:

1. In combination with the glowers of an electric lamp, a pivotedgravitating glower support included in the glowcr circuit and adapted tomaintain the proper tension on the glowcr.

J. In combination with a light emitting member of an electric lamp,pivoted supporting mean; for tensioning the light emitting member andprovided with a weighted the other end of the light emitting member,

said support being provided with a weight at a. point distant from theconnection between the support and the light emitting member.

4. The combination with the light emitting niembe-r of an electric lump,of a support therefor comprising a lever pivoted intermediate its endsand connected at one end to the light emitting member.

5. The combination with the light emitting member of an electric lamp,of a, sup port therefor comprising a pivoted lever having means at oneend for conne tion with the light emitting member and means at theotherend for putting said light emit ting member under tension.

(3. The combination with the light emit- -ting member of an electriclamp, of a support therefor having a depending arm for engagementtherewith and a laterally pro jecting arm having a tensioning weight forsaid light emitting member.

Tn testimony whereof, I have hereun subscribed my name this 29 day ofAugust,

ROY NECKERMAN.

\Vitnesses 2 I Geo. J. TAYLOR, MAX HARRIS.

In testimony whereof, I have hereunto subscribed my name this 19th dayof August, 1910.

OTTO FOELL.

WVitnesses:

CHARLES E.-KELLY, A. YOUNGIIOLM.

